01 Record
CVE-2023-38831
RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file
HighKEVPUBLISHEDCNA: mitre
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
02 Description
RARLAB WinRAR before 6.23 allows attackers to execute arbitrary code when a user attempts to view a benign file within a ZIP archive. The issue occurs because a ZIP archive may include a benign file
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2023-08-24. Federal remediation due 2023-09-14. Known ransomware campaign use: reported by CISA.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 99.81% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 99.9% of scored records. A rank, not a probability.
- NVD base score
- 7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-08-05.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-08-23 00:00Z3 YR AGO
- Last updated
- 2026-08-05 03:55Z2 MO AGO
- Reserved
- 2023-07-25
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.8)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- Data version
- 5.2
- Document digest
- 72d0b63db59ee3a72623d092a028c0190165c075c1a84369a6d8a41eba79d2e2
05 Affected products
VendorProductVersionsPlatforms
06 References
- www.group-ib.comhttps://www.group-ib.com/blog/cve-2023-38831-winrar-zero-day/
- www.bleepingcomputer.comhttps://www.bleepingcomputer.com/news/security/winrar-zero-day-exploited-since-april-to-hack-trading-accounts/
- news.ycombinator.comhttps://news.ycombinator.com/item?id=37236100
- packetstormsecurity.comhttp://packetstormsecurity.com/files/174573/WinRAR-Remote-Code-Execution.html
- blog.googlehttps://blog.google/threat-analysis-group/government-backed-actors-exploiting-winrar-vulnerability/
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-38831